Quantum-Tethered Cyclical Anisotropic Cosmology (Q-TCAC): A Braneworld Tidal-Thermodynamic Framework (V4)

I present a revised, dimensionally consistent, non-isotropic cosmological framework—the Quantum-TetheredCyclical Anisotropic Cosmology (Q-TCAC V4)—which addresses the tension between General Relativityand Quantum Mechanics by modelling our observable universe as a macroscopic, un-collapsed 3-brane trapped inan eccentric, highly elliptical orbit within a higher-dimensional Bulk (D = 5). I demonstrate that 4D spacetimegeometry, local gravitational fields, and the unidirectional arrow of time are emergent macroscopic propertiesdriven by external gravitational tidal forces exerted by an ultra-massive Bulk attractor (the Mega-Anchor).This framework eliminates both dark energy (Λ) and particle dark matter through self-consistent Bulk mechanics. On cosmological scales, a topological tension coupling (Tbrane) mediated by an ER = EPR wormholelattice produces tri-axial expansion and late-time cosmic acceleration (¨a > 0) while preserving a sub-percentquadrupole anisotropy (∆H/H0 ∼ 10−4) along the orbital spine consistent with current supernova bounds. Ongalactic scales, apparent dark matter halos and asymptotically flat rotation curves emerge from three combinedeffects: (i) screened lateral tidal compression perpendicular to the orbital stretch, (ii) cross-dimensional gravitational leakage (“shadow gravity”) from off-brane Bulk structures via the dynamically conserved projected Weyltensor, and (iii) localised metric indentations anchored by ER = EPR wormhole tethers.Furthermore, I formulate a unitary coupling between brane extrinsic curvature trace (K) and coarse-grainedentanglement entropy (∆S) exchanged with the 5D Bulk, establishing a cyclical cosmology. Upon passing perihelion, the universe enters a tidal compression phase (Cosmic Winter) wherein negative extrinsic curvature transfersentanglement entropy back into Bulk degrees of freedom, driving black hole-to-white hole transitions and reconstructing a low-entropy ground state (Cosmic Egg) at aphelion. Author & AI Transparency Note: All theoretical postulates, physical mechanisms, model architecture, and conceptual syntheses were conceived, directed, and verified by the sole human author (Dr Ghazanfar Anwar). Mathematical typesetting, bibliographic formatting, and LaTeX compilation were assisted by an AI language model in accordance with Zenodo's generative AI guidelines.